--- a/efrtest/etsi-dec.c	Wed Dec 14 07:25:46 2022 +0000
+++ b/efrtest/etsi-dec.c	Wed Dec 14 08:02:00 2022 +0000
@@ -14,73 +14,7 @@
 #include <string.h>
 #include <strings.h>
 #include "../libgsmefr/gsm_efr.h"
-
-#define	ETSI_DEC_NWORDS	247
-
-static int
-read_input(inf, bitvec, filename_for_errs)
-	FILE *inf;
-	uint8_t *bitvec;
-	char *filename_for_errs;
-{
-	uint8_t file_bytes[ETSI_DEC_NWORDS * 2], *sp;
-	int cc;
-	unsigned n;
-
-	cc = fread(file_bytes, 2, ETSI_DEC_NWORDS, inf);
-	if (cc == 0)
-		return 0;
-	if (cc != ETSI_DEC_NWORDS) {
-		fprintf(stderr, "error: short read from %s\n",
-			filename_for_errs);
-		exit(1);
-	}
-	sp = file_bytes;
-	for (n = 0; n < ETSI_DEC_NWORDS; n++) {
-		if (sp[1]) {
-			fprintf(stderr,
-		"error in %s: non-zero in what should be LE upper byte\n",
-				filename_for_errs);
-			exit(1);
-		}
-		bitvec[n] = sp[0];
-		sp += 2;
-	}
-	return 1;
-}
-
-static void
-bits2frame(input_bits, frame, filename_for_errs, frame_no)
-	uint8_t *input_bits, *frame;
-	char *filename_for_errs;
-	unsigned frame_no;
-{
-	uint8_t bits[248], *sp, *dp;
-	unsigned nb, byte, mask;
-
-	bits[0] = 1;
-	bits[1] = 1;
-	bits[2] = 0;
-	bits[3] = 0;
-	bcopy(input_bits, bits + 4, 244);
-	sp = bits;
-	dp = frame;
-	for (nb = 0; nb < EFR_RTP_FRAME_LEN; nb++) {
-		byte = 0;
-		for (mask = 0x80; mask; mask >>= 1) {
-			if (*sp > 1) {
-				fprintf(stderr,
-					"error in %s frame #%u: data bit > 1\n",
-					filename_for_errs, frame_no);
-				exit(1);
-			}
-			if (*sp)
-				byte |= mask;
-			sp++;
-		}
-		*dp++ = byte;
-	}
-}
+#include "etsi.h"
 
 static void
 write_pcm_le(outf, pcm)
@@ -130,7 +64,8 @@
 		exit(1);
 	}
 	for (frame_no = 0; ; frame_no++) {
-		rc = read_input(inf, input_bits, argv[1]);
+		rc = read_etsi_bits(inf, 0, input_bits, ETSI_DEC_NWORDS,
+				    argv[1]);
 		if (!rc)
 			break;
 		if (input_bits[0] > 1) {